IMPROVED CALORIC ENGINE.
Naval Architecture During the Last Half Century.
A Three Cylinder Locomotive.
Scientific American. ESTABLISHED 1845.
TERMS FOR THE SCIENTIFIC AMERICAN.
The Scientific American Supplement
Scientific American Export Edition.
NEW YORK, SATURDAY, FEBRUARY 26, 1887.
Contents.
TABLE OF CONTENTS OF SCIENTIFIC AMERICAN SUPPLEMENT No. 582. For the Week Ending February 26, 1887.
NEW AMENDMENT OF THE DESIGN PATENT LAW.
ARE STEEL GUNS REALLY SUPERIOR?
THE COCAINE HABIT.
Pyrofuxin a New Tanning Substance from Coal.
Weight and Power of Modern Guns. Table of Armstrong Guns.
Castner's New Method for Producing Sodium.
Preventive Medicine.
The Peace Army of the United States.
A Solid Life Insurance Company.
EMERY WHEELS FOR GUMMING SAWS.
THE FRILLED SHARK THE OLDEST LIVING TYPE OF VERTEBRATES.
COMBINED BENCH AND IRONING BOARD.
IMPROVED BLIND STOP.
The British Armament at Victoria.
A SIMPLE DEVICE FOR CRIMPING BOOTS OR SHOES.
PLASTERER'S HAWK.
ADJUSTABLE WOOD MEASURING RACK.
Steel Rail Capacity of the United States.
PENBERTHY INJECTOR.
PROTECTOR FOR LADIES' HATS.
IMPROVED STUMP PULLER.
The Defense of New York within Thirty Days' Time.
Electroplating with Platinum.
COMBINED BRUSH AND COMB CLEANER.
Correspondence.
Coincidence of Charleston Earthquake with a Reported Eruption in the Tonga Group.
Incendiary Birds.
Charcoal as Fossil.
Phosphorescent Birds.
Canned Fish, Meats, etc.
OUR WINTER BIRDS. BY E. M. HASBROUCK.
THERMOSCOPIC BALANCE. BY GEO. M. HOPKINS.
The Duration of the Sun.
IMPROVED MARINE DREDGER.
Hydraulic Dredging at Washington.
A New Sugar Process.
THE NORTHERN LIGHTS.
The Latest Yankee Craze.
EFFECT OF A TORPEDO ON AN IRONCLAD.
Steel Wire Brush Patent.
How Long Should a Nervous Patient be Treated?
TORPEDO BOAT ARMED WITH PNEUMATIC DYNAMITE GUNS.
The Strength of Snails.
CHEVREUL'S BLACK. T. O'CONOR SLOANE, PH.D.
The American Exhibition, London.
ENGINEERING INVENTIONS.
AGRICULTURAL INVENTIONS.
MISCELLANEOUS INVENTIONS.
NEW BOOKS AND PUBLICATIONS.
Business and Personal.
Notes and Queries
HINTS TO CORRESPONDENTS.
TO INVENTORS.
INDEX OF INVENTIONS For which Letters Patent of the United
DESIGNS.
TRADE MARKS.
FORTY-SECOND ANNUAL REPORT OF THE NEW YORK LIFE INSURANCE
REVENUE ACCOUNT.
DISBURSEMENT ACCOUNT.
ASSETS.
TRUSTEES.
Advertisements.
SPECIAL MACHINERY For Grinding and Polishing Manufactured by
CALDWELLS CONVEYOR CALDWELL'S SPIRAL STEEL CONVEYOR, 131-133 West Washington St., Chicago, Ill
CATALOGUES FREE TO ANY ADDRESS TOOLS OF ALL KINDS TOOLS GOODNOW and WIGHTMAN BOSTON
SEBASTIAN, MAY and CO'S Improved Screw Cutting LATHES Foot and Power
ST. PAUL AND NEWPORT IMPROVEMENT COMPANY. CAPITAL USD2,000,000.
MALLEABLE AND FINE GRAY IRON ALSO STEEL CASTINGS FROM SPECIAL
Print Your Own Cards!
Barnes' Pat. Foot and Hand Power MACHINERY, USD15.
AUTOCOPYIST
Syracuse Malleable Iron Works
ROCK DRILLS.
Edco System
A FEW CHOICE TECHNICAL BOOKS. RECENTLY PUBLISHED.
The Techno-Chemical Receipt Book: NOW READY. The Techno-Chemical Receipt Book.
CURE FOR THE DEAF
RUBBER BELTING, PACKING, HOSE. Oldest and Largest Manufacturers
Air Brake Hose A Specialty. RUBBER MATS, RUBBER MATTING AND STAIR TREADS.
SHAFTING DEPARTMENT EDISON MACHINE WORKS. Couplings, Hangers,
ARTESIAN
PLANTS ONLY THE BEST. ILLUSTRATED CATALOGUE FREE. A. D. COWAN
RECENT PROGRESS IN CHEMISTRY.
Handle for Rubber Stamps.
To Manufacturers
THE CHEAPEST AND BEST: Photo Engraving Co 67 PARK PLACE, NEW
THE PHONOGRAPHIC MAGAZINE
ICE and REFRIGERATING
PULLEYS, HANGERS, FRICTION CLUTCHES.
REID'S LIGHTNING BRACE SPECIALLY DESIGNED FOR LIGHT BORING,
WIRE ROPE Trenton Iron Co. WORKS and OFFICE, TRENTON, N. J.
THE BEST STEAM PUMP.
LEGS and ARMS,
STEAM ENGINES.
SCIENTIFIC BOOKS.
HARRISON CONVEYOR!
HOISTING ENGINES and Boilers for every possible duty. New
The Caligraph. LIFE IS TOO SHORT TO WRITE THE OLD WAY
Patents in Brazil and Mexico.
Cutler's Pocket Inhaler
WELL Encyclopedia of 700 Engravings of WELL TOOLS, Diamond
FOREIGN PATENTS. Their Cost Reduced.
Advertisements. (2)
CHARTER'S Gas Engine.
Mineral Lands Prospected.
SEAMLESS BRASS and COPPER TUBES. SHEET BRASS, BRASSWIRE
REMINGTON Standard Typewriter.
PATENTS.
"THE STANDARD." H.W.JOHNS' ASBESTOS BOILER COVERINGS
PLAY THE PIANO AND ORGAN
Chandler and Farquhar, 177 Washington St., BOSTON.
The Original Unvulcanized Packing
JENKINS BROS.
GAS ENGINES.
PIPE COVERINGS
SHIELDS and BROWN
VIOLIN OUTFITS.
HARTFORD STEAM BOILER HARTFORD. CONN. INSPECTION AND INSURANCE CO.
THE BOOMER and BOSCHERT PRESSES.
Lard Press. Baling Press Oil Press. Cider Press Baling Press.
THE AMERICAN BELL TELEPHONE CO. 95 MILK ST., BOSTON, MASS.
SHEPARD'S NEW USD60 Screw-Cutting Foot Lathe.
PULLEYS. Order from our "Special List." THE JOHN T. NOYE MFG. CO., BUFFALO, N. Y.
PROSPECTUS OF THE Scientific American
THE Scientific American Supplement. (2)
PRINTING INKS.
FOOTNOTES
Transcriber's Note:
Scientific American
[Entered at the Post Office of New York, N. Y., as Second Class Matter.]
A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS, CHEMISTRY, AND MANUFACTURES.
Vol. LVI.—no. 9.
[NEW SERIES.]]
NEW YORK, FEBRUARY 26, 1887.
[$3.00 per Year.
